document.write( "Question 973399: can someone help me please? thanks! and show work as well please :)\r
\n" ); document.write( "\n" ); document.write( "Find the point(s) of intersection of the line X + Y = 5 and the circle x2 + y2 = 25 by solving the system of equations.\r
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Algebra.Com's Answer #595578 by algebrahouse.com(1659)\"\" \"About 
You can put this solution on YOUR website!
x + y = 5 ----> x = -y + 5 {subtracted y from each side of top equation}
\n" ); document.write( "x² + y² = 25\r
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\n" ); document.write( "\n" ); document.write( "(-y + 5)² + y² = 25 {substituted (-y + 5), in for x, into bottom equation}
\n" ); document.write( "y² - 10y + 25 + y² = 25 {squared the binomial using the foil method}
\n" ); document.write( "2y² - 10y + 25 = 25 {combined like terms}
\n" ); document.write( "2y² - 10y = 0 {subtracted 25 from each side}
\n" ); document.write( "2y(y - 5) = 0 {factored out the greatest common factor, 2y}
\n" ); document.write( "2y = 0 or y - 5 = 0 {set each factor equal to 0}
\n" ); document.write( "y = 0 or y = 5 {divided each side of 1st equation by 2 and added 5 to each side of 2nd equation}\r
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\n" ); document.write( "\n" ); document.write( "x + y = 5 {first original equation}
\n" ); document.write( "If y = 0
\n" ); document.write( "x + 0 = 5 {substituted 0 for y}
\n" ); document.write( "x = 5 {subtracted 0 from each side}
\n" ); document.write( "(5,0) is a solution}\r
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\n" ); document.write( "\n" ); document.write( "If y = 5
\n" ); document.write( "x + 5 = 5 {substituted 5 for y}
\n" ); document.write( "x = 0 {subtracted 5 from each side}
\n" ); document.write( "(0,5) is a solution\r
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\n" ); document.write( "\n" ); document.write( "The line will intersect the circle at (0,5) and (5,0)\r
\n" ); document.write( "\n" ); document.write( "x = 5 and y = 0
\n" ); document.write( "or
\n" ); document.write( "x = 0 and y = 5
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For more help from me, visit: www.algebrahouse.com



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